Quick note on imports

    import m.f; -- f must have only a single component
    import module m.n; -- n must have only a single component
    import type m.t; -- t must have only a single component
    import m.(..); -- import everything
    import m.(names); -- import certain names with a single declaration
    import m.(..\names); -- import all but certain names

To do this we basically want a way to say 'gimme a name provided it is not followed by a period' which we can probably do since it needs to be followed by a semicolon instead. We can parse the other cases pretty simply.